Boiler.



Patentd Doc 23 i902 Amrney WITNESSES No. 7I6,467.

(No Model Marmi/Nr flared upper portion with a series of perfora llamen Smarts PATENT OFFICE.

ERNEST G. OFELDT, OF BROOKLYN, NEW YORK.

BOILER.

SPECIFICATION forming part of Letters Patent No. 716,467, dated December 23, 1902.

Application led May 15, 1902. Serial No. 107,510. (No model.)

To all whom, it may concern:

Be it known that I, ERNEST G. OFELDT, a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in boilers, the object of the invention being to so construct a boiler as to absolutely insure the supplying of dry steam to the engine and, further, to expose a large heating-sur face to rapidly generate steam.

lVith these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a view in vertical section illustrating my improvements, and Fig. 2 is a view in horizontal section of the same.

l represents the stand-pipe orboiler proper, closed at its top by a cap 2, secured to the boiler by means of an angle-ring 3, to which the stand-pipe and cap are securely riveted, as clearly shown. Between cap 2 and the upper edge of stand-pipel the flared upper edge of an internal chamber l is secured to make a steam-tight joint. This internal chamber extends down to near the bottom of stand-pipe l and is provided in its tions 5, equal in combined diameter to the diameter of a steam-pipe 6, projecting through the cap 2 and extending some distance down into chamber 4, as shown.

Around stand-pipe l a series of coils 7 are located and communicate with the stand-pipe at their upper and lower ends to permit a free circulation of water through them. These coils are Wound right and left, so as to interlock half-way into each other, as clearly shown in Fig. 2.

In operation Water is in stand-pipe l and coils 7 to the level indicated, and steam generated in stand-pipe l and coils 7 passes into the upper portion of the stand-pipe and through perforations 5 in dry-steam chamber 4, thence down said chamber, where the steam is reheated before it enters pipe 6, hence absolutely insuring the supply of dry steam onlyto the engine. Any Water of condensation which may take place in chamber/I or any liquid which may find its way into said chamber will fall to the bottom thereof and be again generated into steam by the heat in said chamber, as will be understood.

With my improvements it will be seen that the coils 7 and stand-pipe present a large heating-surface to insure the rapid generation of steam, and owing to the internal reheating-chamber through which the steam must pass before entering steam-pipe 6, connected with the engine, the passage of liquid to the engine is prevented.

A great many slight changes might be made in the general form and arrangement of parts described without departing from myinvention, and hence I do not limit myself to the precise construction set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination with a continuous boiler closed at both of its ends, of a chamber closed atits lowerend and disposed within the boiler, said chamber passing through the steam-space and entering the water-space in the boiler and communicating at its upper end with the steam-space of the boiler, and a steam-outlet pipe projecting into said chamber and terminating above the lower end thereof.

2. In a boiler, the combination with a standpipe and a cap-closing the top thereof, of au internal chamber flared at its upper end a-nd secured between the cap and upper edge of the stand-pipe and perforated throughoutits flared portion, and a steam-outlet pipe projecting through the cap and down into the internal chamber.

3. The combination with a b0iler,of a chamber depending into said boiler and closed at its lower end, said chamber communicating at its upper end with the steam-space of the ICO boiler, esteem-outlet pipe depending into said In testimony whereof I have signed this chamber and terminating above the lower end specification in the presence of two subscribthereof, and :L series of intermeshing coils aring Witnesses. ranged around the boiler, one end of each coil ERNEST G. OFELDT. 5 communicating with the steam-space ofv the g Witnesses:

boiler' and the other end of each coil com- GEORGE OFELDT, municating with the Water-space of the boiler. J. F. DOOLING. 

